发明名称 |
METHOD AND MAGNETIC RESONANCE SYSTEM FOR ACQUIRING MAGNETIC RESONANCE DATA |
摘要 |
In a method for acquiring magnetic resonance data with a magnetic resonance system using a magnetic resonance sequence, the sequence has a first partial sequence in which magnetic resonance data are acquired for multiple slices that have to be acquired simultaneously, from which image data for the individual slices are calculated by a reconstruction algorithm. The sequence also has a second partial sequence for determining additional data, which are used to evaluate and/or assess the magnetic resonance data, and which have a spatial resolution that is lower than the magnetic resonance data, in which radio-frequency pulses and readout processes take place in a slice-specific manner through a time offset within a single measuring process, in which a single continuous excitation period with the radio-frequency pulses and a single continuous readout period with the readout processes follow one another, so that separate additional data are directly determined for each slice. |
申请公布号 |
US2015084629(A1) |
申请公布日期 |
2015.03.26 |
申请号 |
US201414495146 |
申请日期 |
2014.09.24 |
申请人 |
Siemens Aktiengesellschaft |
发明人 |
Porter David Andrew |
分类号 |
G01R33/56;G01R33/54 |
主分类号 |
G01R33/56 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method for acquiring magnetic resonance data, comprising:
operating a magnetic resonance apparatus with a magnetic resonance sequence to acquire magnetic resonance data from a subject situated in the magnetic resonance apparatus; in a first portion of said sequence, operating said magnetic resonance apparatus to simultaneously acquire magnetic resonance signals from respective multiple slices of the subject; in a second portion of said sequence that follows said first portion, operating said magnetic resonance apparatus to acquire additional data with a spatial resolution that is lower than a spatial resolution at which said magnetic resonance data are acquired, by radiating a radio-frequency pulse and implementing a slice-specific readout of said additional data for respective slices among said multiple slices, at respective readout times that are chronologically offset with respect to each other following a single continuous excitation of nuclear spins in the subject by said radio-frequency pulses with an individual readout for each slice, thereby obtaining a separate set of additional data for each slice among said multiple slices; and in a processor, reconstructing a magnetic resonance image of said slices in a reconstruction algorithm dependent on said additional data. |
地址 |
Muenchen DE |